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31. 发明授权

US5585954A Apparatus for measuring optical transmission characteristic 失效
标题翻译：光传输特性测量装置
公开(公告)号：US5585954A
公开(公告)日：1996-12-17
申请号：US346092
申请日：1994-11-29
申请人： Hidenori Taga , Shu Yamamoto , Shigeyuki Akiba
发明人： Hidenori Taga , Shu Yamamoto , Shigeyuki Akiba
IPC分类号： H04L1/20 , H04L25/02 , H04B10/08 , H04B10/00
CPC分类号： H04L1/20 , H04B10/07953
摘要： An apparatus for measuring optical transmission characteristic, which has an input unit of data signal and of clock pulses, a signal decision unit, a display unit and a control unit. The signal decision unit comprises a plurality of signal decision circuits. A Q value employed as a parameter for the evaluation of the transmission characteristic of an optical communication system can be obtained in real time since bit error rates necessary for the calculation of the Q value can be simultaneously obtained by the plurality of signal decision circuits.
摘要翻译：一种用于测量光传输特性的装置，其具有数据信号和时钟脉冲的输入单元，信号判定单元，显示单元和控制单元。信号判定单元包括多个信号判定电路。可以实时获得用作评估光通信系统的传输特性的参数的Q值，因为可以通过多个信号判定电路同时获得用于计算Q值所需的误码率。

32. 发明授权

US5912750A Optical transmission line 失效
标题翻译：光传输线
公开(公告)号：US5912750A
公开(公告)日：1999-06-15
申请号：US779780
申请日：1997-01-07
申请人： Noriyuki Takeda , Takayuki Miyakawa , Hidenori Taga , Shigeyuki Akiba , Shu Yamamoto
发明人： Noriyuki Takeda , Takayuki Miyakawa , Hidenori Taga , Shigeyuki Akiba , Shu Yamamoto
IPC分类号： G02B6/02 , H04J14/00 , H04J14/02
CPC分类号： H04J14/0221
摘要： Wavelength multiplexed optical signals which are input into a first optical amplifier from an optical transmission terminal device over an optical fiber are differently amplified in respective wavelengths due to unevenness of gain of the optical amplifiers and then output. By providing M-transmission optical filters having an M-type transmission characteristic to cancel gain deviation of the optical amplifiers in respective wavelengths, a flat gain characteristic can be achieved even after the optical signals are transmitted via a plurality of optical amplifiers and a plurality of M-transmission optical filters. Also, by removing ASE in a wavelength range of 1.53 .mu.m which prevents signal amplification in a wavelength range of 1.55 .mu.m, the wavelength multiplexed optical signals which are sufficiently amplified can be transmitted to an optical reception terminal device over the optical fiber.
摘要翻译：通过光纤从光传输终端装置输入到第一光放大器中的波分复用光信号由于光放大器的增益不均匀而在各波长中不同地被放大，然后被输出。通过提供具有M型传输特性的M传输光学滤波器来消除各个波长的光放大器的增益偏差，即使在通过多个光放大器传输光信号和多个光放大器之后，也可以获得平坦的增益特性 M型传输滤光片。此外，通过在1.53μm的波长范围内去除ASE，防止在1.55μm的波长范围内的信号放大，可以充分放大的波长复用光信号可以通过光纤传输到光接收终端装置。

33. 发明授权

US5790289A WDM optical communication method with pre-emphasis technique and an apparatus therefor 失效
标题翻译：具有预加重技术的WDM光通信方法及其装置
公开(公告)号：US5790289A
公开(公告)日：1998-08-04
申请号：US651218
申请日：1996-05-22
申请人： Hidenori Taga , Noriyuki Takeda , Shu Yamamoto , Shigeyuki Akiba
发明人： Hidenori Taga , Noriyuki Takeda , Shu Yamamoto , Shigeyuki Akiba
IPC分类号： H04J14/00 , H04B10/077 , H04B10/25 , H04B10/2507 , H04B10/294 , H04B10/54 , H04B10/564 , H04J14/02
CPC分类号： H04B10/2935 , H04J14/0221
摘要： A wavelength division multiplexed (WDM) optical communication method and apparatus uses a pre-emphasis technique to adjust the attenuation or amplification of a particular optical channel at a transmitter terminal to produce identical signal-to-noise ratios for all of the optical channels at a receiver terminal. The pre-emphasis adjustments to the transmitted signals are made on the basis of signal-to-noise ratio measurements performed at the receiver terminal. The signal-to-noise ratio values for each channel are transmitted through a facing line that is also used to transmit data along optical communication lines from the receiver terminal back to the transmitter terminal. The present invention also provides a method and apparatus for monitoring optical transmission paths for the deterioration of optical amplifier repeaters or an optical fiber. The optical signals are then adjusted to account for the location of the particular amplifier or fiber that has deteriorated.
摘要翻译：波分多路复用（WDM）光通信方法和装置使用预加重技术来调整在发射机终端处的特定光信道的衰减或放大，以便在所有光信道处产生相同的信噪比接收终端。基于在接收机终端执行的信噪比测量，对发射信号进行预加重调整。每个通道的信噪比值通过面对线传输，该对面线也用于沿着光通信线路将数据从接收机终端发送回发射机终端。本发明还提供了一种用于监测光放大器中继器或光纤的劣化的光传输路径的方法和装置。然后调整光信号以考虑已劣化的特定放大器或光纤的位置。

34. 发明授权

US6028695A Optical modulating apparatus 失效
标题翻译：光调制装置
公开(公告)号：US6028695A
公开(公告)日：2000-02-22
申请号：US124993
申请日：1998-07-30
申请人： Aritomo Uemura , Takashi Mizuochi , Katsuhiro Shimizu , Kiwami Matsushita , Tadayoshi Kitayama , Masatoshi Suzuki , Hidenori Taga , Shu Yamamoto
发明人： Aritomo Uemura , Takashi Mizuochi , Katsuhiro Shimizu , Kiwami Matsushita , Tadayoshi Kitayama , Masatoshi Suzuki , Hidenori Taga , Shu Yamamoto
IPC分类号： G02F1/03 , H04B10/07 , H04B10/516 , H04B10/54 , H04B10/548 , H04B10/58 , H04B10/61 , G02F1/035 , G02F1/055
CPC分类号： G02F1/0327 , G02F2203/25
摘要： When an intensity modulating operation and a phase modulating operation are carried out by employing a 2-electrode MachZehnder type optical modulator preferably a LN-MZ type optical modulator, a drive signal of this 2-electrode LN-MZ type optical modulator is produced from an intensity modulation signal and a phase modulation signal with a low loss and a simple arrangement. A optical modulating apparatus includes a splitter/combiner structured to split an intensity modulation signal inputted into a first input terminal into a first electric signal having an in-phase relationship with that of the intensity modulation signal and second electric signal having an inverse phase relationship therewith, split a phase modulation signal inputted into a second input terminal into a third electric signal having an in-phase relationship with that of the phase modulation signal an also a fourth electric signal having an in-phase relationship therewith, combine the first electric signal with the fourth electric signal to thereby output a first combined signal, and combine the second electric signal with the third electric signal to thereby output a second combined signal; and an optical modulating means structured to split a light carrier wave entered from a light source into two light carrier waves, and to optically modulate the two sets of the split light carrier waves by using the first combined signal and the second combined signal derived from the splitter/combiner, and combine the two phase-modulated above said light carrier waves to output an optical modulation signal.
摘要翻译：当通过使用优选为LN-MZ型光调制器的2电极MachZehnder型光学调制器进行强度调制操作和相位调制操作时，该2电极LN-MZ型光调制器的驱动信号由强度调制信号和具有低损耗和简单布置的相位调制信号。光调制装置包括：分离器/组合器，被构造成将输入到第一输入端的强度调制信号分成与强度调制信号的同相关系的第一电信号和与其相反的相位关系的第二电信号将输入到第二输入端子的相位调制信号分别成为与相位调制信号同相的同步关系的第三电信号，以及与其同相关系的第四电信号，将第一电信号与第四电信号，从而输出第一组合信号，并将第二电信号与第三电信号组合，从而输出第二组合信号; 以及光调制装置，被构造成将从光源进入的光载波分成两个光载波，并且通过使用从第二组合信号导出的第一组合信号和第二组合信号对两组分裂光载波进行光学调制分离器/组合器，并且组合在所述轻载波上的两个相位调制以输出光调制信号。

35. 发明授权

US5822095A Optical add-drop multiplexer 失效
标题翻译：光分插复用器
公开(公告)号：US5822095A
公开(公告)日：1998-10-13
申请号：US702274
申请日：1996-08-23
申请人： Hidenori Taga , Takayuki Miyakawa , Shigeyuki Akiba
发明人： Hidenori Taga , Takayuki Miyakawa , Shigeyuki Akiba
IPC分类号： H04J14/00 , G02B6/293 , G02B6/34 , H04B10/2507 , H04B10/27 , H04B10/29 , H04J14/02 , H04L12/40 , H04Q11/00
CPC分类号： H04Q11/0003 , G02B6/29361 , G02B6/29362 , G02B6/29383 , H04J14/0206 , H04J14/0213 , H04Q2011/0009 , H04Q2011/0015 , H04Q2011/0035
摘要： An object of the present invention is to provide an optical add-drop multiplexer capable of giving improved characteristics with a simple, inexpensive arrangement which needs not a corresponding number of optical bandpass filters to the wavelength components of a light signal to be carried. The wavelength components .lambda.1 to .lambda.n of an input n-wave signal is received by an input optical fiber and transmitted through an optical circulator and an optical fiber to an optical bandpass filter which allows a specific wavelength .lambda.1 to pass but rejects the other wavelengths .lambda.2 to .lambda.n. While the rejected wavelengths .lambda.2 to .lambda.n are returned back to the optical fiber, the specific wavelength .lambda.1 runs through another optical fiber and another optical circulator and then is dropped from an output optical fiber. Meanwhile, another signal component of the wavelength .lambda.1 is added and introduced from another input optical fiber through the another optical circulator and the another optical fiber to the optical bandpass filter. Upon the added wavelength .lambda.1 having passed the optical bandpass filter and entering the optical fiber, it is mixed with the rejected wavelengths .lambda.2 to .lambda.n. A resultant sum signal of the full wavelengths .lambda.1 to .lambda.n is passed through the optical circulator and transmitted from an output optical fiber.
摘要翻译：本发明的一个目的是提供一种光分插复用器，其能够以简单且便宜的布置提供改进的特性，其不需要相对数量的光带通滤波器到待承载的光信号的波长分量。输入n波信号的波长分量λ1至λn由输入光纤接收，并通过光环行器和光纤传输到允许特定波长λ1通过但拒绝其他的光学带通滤波器波长λ2到λn。当被拒绝的波长λ2到λn返回到光纤时，特定波长λ1穿过另一个光纤和另一个光环行器，然后从输出光纤中掉落。同时，波长λ1的另一个信号分量从另一个输入光纤通过另一光环行器和另一光纤引入光带通滤波器。当经过光带通滤波器并进入光纤的附加波长λ1时，将其与被拒绝的波长λ2与λn混合。全波长λ1至λn的合成和信号通过光环行器并从输出光纤传输。

36. 发明授权

US06377375B1 Optical wavelength division multiplexed signal amplifying repeater and optical communication transmission line with very large capacity 失效
标题翻译：光波分复用信号放大中继器和光通信传输线，容量非常大
公开(公告)号：US06377375B1
公开(公告)日：2002-04-23
申请号：US09231893
申请日：1999-01-14
申请人： Hidenori Taga , Shu Yamamoto
发明人： Hidenori Taga , Shu Yamamoto
IPC分类号： H04J1402
CPC分类号： H04B10/294 , H04B10/2916 , H04B2210/256 , H04B2210/258 , H04J14/02
摘要： An optical wavelength division multiplexed signal amplifying repeater capable of doubling the number of wavelength division multiplexed signals that can be transmitted is disclosed. Optical signals of both 1.3 &mgr;m band and 1.55 &mgr;m band in the entered optical wavelength division multiplexed signals are amplified, while pumping lights capable of causing Raman amplification in the 1.3 &mgr;m band are coupled with the optical wavelength division multiplexed signals so as to cause the Raman amplification for the optical signals of the 1.3 &mgr;m band, such that a difference between the loss in the 1.3 &mgr;m band and the loss in the 1.55 &mgr;m band due to the optical fibers are compensated. An optical communication transmission line using such repeaters is also disclosed.
摘要翻译：公开了一种能够将可传输的波分复用信号的数量加倍的光波分复用信号放大中继器。在输入的光波分复用信号中，1.3mum波段和1.55mum波段的光信号被放大，而在1.3mum波段中能够引起拉曼放大的泵浦光与光波分复用信号耦合，从而使拉曼对1.3mum波段的光信号进行放大，使得1.3mum波段的损耗与由于光纤导致的1.55mum波段的损耗之间的差异被补偿。还公开了使用这种中继器的光通信传输线。

37. 发明授权

US07088927B2 Optical receiving apparatus and method 失效
标题翻译：光接收装置及方法
公开(公告)号：US07088927B2
公开(公告)日：2006-08-08
申请号：US10783227
申请日：2004-02-19
申请人： Hidenori Taga , Koji Goto
发明人： Hidenori Taga , Koji Goto
IPC分类号： H04B10/06 , H03K5/125
CPC分类号： H04L25/063 , H04B10/695
摘要： An optical receiving apparatus includes a signal brancher for branching an optical input signal received from an optical transmission line into a first signal component and a second signal component, a clock extractor for extracting a clock having an amplitude from the second signal component, and a discriminator for discriminating the first signal component. The apparatus also includes a threshold controller for generating a discrimination threshold for the discriminator according to a relationship between the extracted clock amplitude and a bit error rate to which the extracted clock amplitude corresponds.
摘要翻译：光接收装置包括：信号分支器，用于将从光传输线接收的光输入信号分支为第一信号分量和第二信号分量;时钟提取器，用于从第二信号分量中提取具有振幅的时钟;以及鉴频器用于识别第一信号分量。该装置还包括阈值控制器，用于根据所提取的时钟振幅和所提取的时钟振幅对应的误比特率之间的关系，产生鉴别器的鉴别阈值。

38. 发明授权

US06868514B2 FEC frame structuring method and FEC multiplexer 失效
标题翻译： FEC帧结构方法和FEC多路复用器
公开(公告)号：US06868514B2
公开(公告)日：2005-03-15
申请号：US09890858
申请日：2000-12-06
申请人： Kazuo Kubo , Hideo Yoshida , Hiroshi Ichibangase , Hidenori Taga , Eiichi Shibano , Tadami Yasuda
发明人： Kazuo Kubo , Hideo Yoshida , Hiroshi Ichibangase , Hidenori Taga , Eiichi Shibano , Tadami Yasuda
IPC分类号： H03M13/15 , H03M13/27 , H03M13/29 , H04J3/00 , H04L1/00
CPC分类号： H03M13/2921 , H03M13/15 , H03M13/1515 , H03M13/2721 , H03M13/6561
摘要： In an FEC frame structuring method, and an FEC multiplexer, the order of information is changed by a first interleaving circuit 32, a first error correction code is generated by an RS (239, 223) coding circuit 33, the order is returned to the original order by a first deinterleaving circuit 34, and a second error correction code is generated by an RS (255, 239) coding means 5. The second error correction code is decoded by an RS (255, 239) decoding circuit 11 to correct errors in the information, the order of information is changed by a second interleaving circuit 35, the first error correction code is decoded by an RS (239, 223) decoding circuit 36 to correct residual errors in the information, and the order is returned to the original order by a second deinterleaving circuit 37.
摘要翻译：在FEC帧结构方法和FEC多路复用器中，由第一交织电路32改变信息的顺序，由RS（239,223）编码电路33生成第一纠错码，顺序返回到通过第一去交织电路34的原始顺序，并且由RS（255,239）编码装置5产生第二纠错码。第二纠错码由RS（255,239）解码电路11解码以校正错误在信息中，通过第二交错电路35改变信息的顺序，由RS（239,223）解码电路36对第一纠错码进行解码，以校正信息中的残差，并将顺序返回到通过第二去交织电路37的原始顺序。

39. 发明申请

US20050226622A1 Underwater repeater employing rare earth element doped fiber amplifier, Raman assist and optical pump source sparing 审中-公开
标题翻译：使用稀土元素掺杂光纤放大器的水下中继器，拉曼辅助和光泵源保护
公开(公告)号：US20050226622A1
公开(公告)日：2005-10-13
申请号：US10818888
申请日：2004-04-06
申请人： Patrick Trischitta , Koji Goto , Hidenori Taga
发明人： Patrick Trischitta , Koji Goto , Hidenori Taga
IPC分类号： H04B10/17 , H04J14/02
CPC分类号： H04B10/2918 , H04B10/2916 , H04J14/0221
摘要： An optical repeater is provided which is operable to amplify signals propagated by a pair of optical transmission fibers. The optical repeater includes a first rare earth element doped (REED) fiber coupled to a first transmission fiber of the pair of optical transmission fibers. A second rare earth element doped (REED) fiber is coupled to a second transmission fiber of the pair of optical transmission fibers. A plurality of optical pump sources are provided, there being either four or more pump sources, or at least two pump sources in which each pump source has a different center wavelength. One or more optical energy couplers are coupled to combine portions of the outputs of all the optical pump sources and to distribute the combined portions for insertion into each of the first and second REED fibers for amplification of signals and into each of the first and second transmission fibers for Raman amplification of signals.
摘要翻译：提供了一种光中继器，其可操作以放大由一对光传输光纤传播的信号。光中继器包括耦合到该对光传输光纤的第一传输光纤的第一稀土元素掺杂（REED）光纤。第二稀土元素掺杂（REED）光纤耦合到该对光传输光纤的第二传输光纤。提供了多个光泵浦源，其中有四个或更多个泵浦源，或至少两个泵浦源，其中每个泵浦源具有不同的中心波长。一个或多个光能耦合器被耦合以组合所有光泵浦源的输出的部分并且分配用于插入到每个第一和第二REED光纤中的组合部分，用于放大信号并进入第一和第二传输用于信号拉曼放大的纤维。

40. 发明授权

US06856771B2 Optical receiving apparatus and method 失效
标题翻译：光接收装置及方法
公开(公告)号：US06856771B2
公开(公告)日：2005-02-15
申请号：US10784048
申请日：2004-02-19
申请人： Hidenori Taga , Koji Goto
发明人： Hidenori Taga , Koji Goto
IPC分类号： H03F3/08 , H04B10/07 , H04B10/293 , H04B10/40 , H04B10/50 , H04B10/564 , H04B10/572 , H04B10/60 , H04B10/66 , H04L13/18 , H04B10/06 , H03K5/125
CPC分类号： H04L25/063 , H04B10/695
摘要： An optical receiving apparatus according to the present invention comprises an optical signal branching circuit for receiving a signal light input from an optical transmission line, a discriminator for discriminating an output signal of the optical signal branch circuit, an evaluator for evaluating characteristics of another output signal of the optical signal branching circuit. The evaluator includes a saturable absorber for determining the discrimination threshold of the discriminator.
摘要翻译：根据本发明的光接收装置包括用于接收从光传输线输入的信号光的光信号分支电路，用于鉴别光信号分支电路的输出信号的鉴别器，用于评估另一输出信号的特性的评估器的光信号分支电路。评估器包括用于确定鉴别器鉴别阈值的可饱和吸收器。

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